Left atrial enlargement

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ECG Findings

  • Biphasic P in V1 with wide, deep terminal component, >1mm depth & wide
  • Left atrial hyper.-terminal component is larger than .04 sec.

Differential Diagnosis

Cardiac Hypertrophy and Enlargement

See Also


  • Adapted from Niemann, Lampe, Pani, Donaldson, ECGpedia.org
  • Journal of Electrocardiology. Vol 43 (2010). 40-42.